I think that the slig and paramite appendages are homologous. I've used various terms before: tentacles, fingers, thrips, fangs, "phalangipods"... but I think the best one ever is pedipalp.
Pedipalps are a sort of cross between legs and mouth parts. Although the distinction between the two is function and form, it is evolutionarily arbitrary due to the nature of arthropod appendages, in which antennae, mouth parts (including mandibles, maxillae and maxillipeds), wings, elytra, gills, walking legs (pereiopods), swimming legs (pleopods), sexual organs (gonopods), and parts of the tail (uropods) are all appendages and are probably descended from identical body parts.
Pedipalps are clearly seen on spiders and some other arachnids, and are used for feeding, occasionally walking, sometimes fighting and in males, for the transfer of sperm.
I think that that the facial appendages of paramites are perfect Oddworld analogies with pedipalps, and I think that is a good name. I think this also works with the slig features as well. If not, "fang" sounds far better than any connections with fingers.
The scrab mouth has always struck me as a beak. Certainly the hard, pink tip of the upper jaw looks like part of one and could do some damage, though the reach of the lower jaw makes this superfluous. It has teeth, but then so did many prehistoric bird beaks.
Though honestly, I don't think the mouth of a scrab particularly needs any special name.
The external ear lobes of a Glukkon are exactly the same as those of the ogre Shrek. And I think they are just that: ear lobes. There are so many varieties on Earth, and we all call them "ears". Some bats have two ear lobes per ear. The Glukkon's earlobe is tubular, movable and seems to express emotion as part of the Glukkon body language. Just as they do in so many species.
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